A9660. Serega and Fun
编程题
普及/提高-
知识点
题目描述
Serega loves fun. However, everyone has fun in the unique manner. Serega has fun by solving query problems. One day Fedor came up with such a problem.
You are given an array $a$ consisting of $n$ positive integers and queries to it. The queries can be of two types:
1. Make a unit cyclic shift to the right on the segment from $l$ to $r$ (both borders inclusive). That is rearrange elements of the array in the following manner: $a[l],a[l+1],...,a[r-1],a[r]→a[r],a[l],a[l+1],...,a[r-1].$
2. Count how many numbers equal to $k$ are on the segment from $l$ to $r$ (both borders inclusive).
Fedor hurried to see Serega enjoy the problem and Serega solved it really quickly. Let's see, can you solve it?
You are given an array $a$ consisting of $n$ positive integers and queries to it. The queries can be of two types:
1. Make a unit cyclic shift to the right on the segment from $l$ to $r$ (both borders inclusive). That is rearrange elements of the array in the following manner: $a[l],a[l+1],...,a[r-1],a[r]→a[r],a[l],a[l+1],...,a[r-1].$
2. Count how many numbers equal to $k$ are on the segment from $l$ to $r$ (both borders inclusive).
Fedor hurried to see Serega enjoy the problem and Serega solved it really quickly. Let's see, can you solve it?
输入格式
The first line contains integer $n$ ( $1<=n<=10^{5}$ ) — the number of elements of the array. The second line contains $n$ integers $a[1],a[2],...,a[n]$ ( $1<=a[i]<=n$ ).
The third line contains a single integer $q$ ( $1<=q<=10^{5}$ ) — the number of queries. The next $q$ lines contain the queries.
As you need to respond to the queries online, the queries will be encoded. A query of the first type will be given in format: $1$ $l'_{i}$ $r'_{i}$ . A query of the second type will be given in format: $2$ $l'_{i}$ $r'_{i}$ $k'_{i}$ . All the number in input are integer. They satisfy the constraints: $1<=l'_{i},r'_{i},k'_{i}<=n$ .
To decode the queries from the data given in input, you need to perform the following transformations:
$l_{i}=((l'_{i}+lastans-1) mod n)+1; r_{i}=((r'_{i}+lastans-1) mod n)+1; k_{i}=((k'_{i}+lastans-1) mod n)+1.$ Where $lastans$ is the last reply to the query of the 2-nd type (initially, $lastans=0$ ). If after transformation $l_{i}$ is greater than $r_{i}$ , you must swap these values.
The third line contains a single integer $q$ ( $1<=q<=10^{5}$ ) — the number of queries. The next $q$ lines contain the queries.
As you need to respond to the queries online, the queries will be encoded. A query of the first type will be given in format: $1$ $l'_{i}$ $r'_{i}$ . A query of the second type will be given in format: $2$ $l'_{i}$ $r'_{i}$ $k'_{i}$ . All the number in input are integer. They satisfy the constraints: $1<=l'_{i},r'_{i},k'_{i}<=n$ .
To decode the queries from the data given in input, you need to perform the following transformations:
$l_{i}=((l'_{i}+lastans-1) mod n)+1; r_{i}=((r'_{i}+lastans-1) mod n)+1; k_{i}=((k'_{i}+lastans-1) mod n)+1.$ Where $lastans$ is the last reply to the query of the 2-nd type (initially, $lastans=0$ ). If after transformation $l_{i}$ is greater than $r_{i}$ , you must swap these values.
输出格式
For each query of the 2-nd type print the answer on a single line.
输入输出样例
输入 #1
7 6 6 2 7 4 2 5 7 1 3 6 2 2 4 2 2 2 4 7 2 2 2 5 1 2 6 1 1 4 2 1 7 3
输出 #1
2 1 0 0
输入 #2
8 8 4 2 2 7 7 8 8 8 1 8 8 2 8 1 7 1 8 1 1 7 3 2 8 8 3 1 1 4 1 2 7 1 4 5
输出 #2
2 0